Licensed HVAC contracting with service rates of $70-$125/hour.
Starting an HVAC business in Illinois requires proper licensing, EPA certification, and significant investment in specialized tools and equipment. No statewide license oversees HVAC licensing. Both heating and cooling services generate strong year-round demand. Startup costs range from $19,600 for a solo operator to $98,000+ for a fully equipped operation. Standard Illinois business taxes apply. HVAC is a high-demand trade with strong earnings—contractors in Illinois charge $70-$125/hour, with system installations generating $3,000-$15,000+ per job.
Any HVAC technician who maintains, services, or disposes of equipment containing refrigerants must hold EPA Section 608 certification. Violations carry fines up to $44,539 per day.
The EPA is phasing down HFC refrigerants under the AIM Act. Stay current on which refrigerants are available and train on new alternatives. This is both a challenge and business opportunity.
| Item | Low | High | Magnitude |
|---|---|---|---|
| HVAC License & Exams Illinois licensing fees | $200 | $800 | |
| EPA 608 Certification Federal requirement for refrigerant handling | $0 | $200 | |
| LLC Filing Illinois LLC registration | $150 | $150 | |
| General Liability Insurance Annual, $1M coverage | $490 | $2,450 | |
| Workers Compensation Insurance Required if hiring | $2,450 | $5,880 | |
| Commercial Auto Insurance Annual coverage | $1,470 | $2,940 | |
| Service Vehicle Van or truck with racking | $9,800 | $44,100 | |
| HVAC Tools & Gauges Manifold gauges, vacuum pump, recovery unit | $2,940 | $7,840 | |
| Refrigerant Recovery Equipment EPA-compliant recovery machine | $980 | $2,940 | |
| Sheet Metal Tools Snips, crimpers, duct tools | $490 | $1,960 | |
| Diagnostic Equipment Combustion analyzer, manometer, leak detector | $490 | $2,940 | |
| Surety Bond Required in some states | $0 | $14,700 | |
| Marketing & Website SEO and Google Ads critical | $490 | $2,450 | |
| Startup range | $19,600 | $98,000 |
The line items above are the main cost drivers, not an exhaustive sum. Several are alternatives rather than additions — a mobile setup or a storefront, a rented kitchen or a build-out — so they are not added together. The startup range is the figure used across this page.
No statewide license. No state HVAC license. Chicago and other cities have own requirements.
Federal requirement to handle refrigerants. Universal type recommended.
Industry certification that boosts credibility with manufacturers and customers
Illinois Secretary of State
Required by most clients and manufacturers
Required in Illinois if you have employees
| # | City | Note |
|---|---|---|
| 01 | Chicago Chicago offers strong HVAC demand. With 2.7M residents it is the largest of the four markets listed for Illinois. | Chicago offers strong HVAC demand. With 2.7M residents it is the largest of the four markets listed for Illinois. |
| 02 | Aurora Aurora offers strong HVAC demand. With 180K residents it is the second largest of the four listed markets, well under a tenth the size of Chicago. | Aurora offers strong HVAC demand. With 180K residents it is the second largest of the four listed markets, well under a tenth the size of Chicago. |
| 03 | Naperville Naperville offers strong HVAC demand. With 150K residents it is the third largest of the four listed markets, well under a tenth the size of Chicago. | Naperville offers strong HVAC demand. With 150K residents it is the third largest of the four listed markets, well under a tenth the size of Chicago. |
| 04 | Rockford Rockford offers strong HVAC demand. With 145K residents it is the fourth largest of the four listed markets, well under a tenth the size of Chicago. | Rockford offers strong HVAC demand. With 145K residents it is the fourth largest of the four listed markets, well under a tenth the size of Chicago. |
Offer seasonal tune-up plans ($150-$300/year per system). This creates predictable revenue, fills slow seasons, and keeps your name top-of-mind when systems fail.
In Illinois, a broken AC in summer or furnace in winter is an emergency. 24/7 availability at premium rates ($150-$250 just to show up) builds reputation and revenue fast.
Becoming a Carrier, Trane, or Lennox authorized dealer gives you access to co-op marketing funds, warranty work, and manufacturer leads. This can transform your business.
IAQ products (air purifiers, UV lights, humidity control) are high-margin add-ons. Every service call is an opportunity to assess and recommend IAQ improvements.
Obtain your HVAC license through No statewide license. No state HVAC license. Chicago and other cities have own requirements. Also get your EPA 608 Universal certification—it's federally required to handle refrigerants.
Work for an established HVAC company for several years. Learn residential and commercial systems, diagnostics, and customer service. Build manufacturer relationships.
NATE (North American Technician Excellence) certification is industry standard. It opens doors with equipment manufacturers and gives customer confidence.
File LLC ($150) with Illinois Secretary of State. Get EIN from IRS. Open business bank account.
Secure general liability, commercial auto, and workers comp. HVAC work carries significant risk—gas lines, electrical, and refrigerants. Proper insurance is essential.
Invest in a service van with proper tool storage. Stock essential HVAC tools: manifold gauges, vacuum pump, recovery unit, multimeter, combustion analyzer. Budget $10,000-$20,000 for tools.
Become authorized dealer/installer for major brands (Carrier, Trane, Lennox, etc.). This gives you access to warranty work, leads, and trade pricing.
Google Business Profile is your #1 lead source. Both heating and cooling services generate strong year-round demand. Focus on emergency repair service initially—installations follow once you have reputation and reviews.